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ChemicalBook CAS DataBase List Duloxetine iMpurity (N-acetyl)
1243540-90-0

Duloxetine iMpurity (N-acetyl) synthesis

2synthesis methods
39511-07-4 Synthesis
3-(THIOPHEN-2-YL)ACRYLALDEHYDE

39511-07-4
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Duloxetine iMpurity (N-acetyl)

1243540-90-0
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Yield:-

Steps:

Multi-step reaction with 4 steps
1.1: tetrahydrofuran / 6 h / 20 °C / Molecular sieve
2.1: copper(l) chloride; sodium t-butanolate; (S)-2,2'-bis-1,1'-binaphthyl / methanol / 15 h / 20 °C / Schlenk technique; Inert atmosphere
2.2: 1.5 h / 20 °C / Schlenk technique; Inert atmosphere
3.1: sodium hydride / dimethyl sulfoxide / 1.5 h / 50 °C
3.2: 1.5 h / 70 °C
4.1: pyridine / dichloromethane

References:

Calow, Adam D. J.;Fernandez, Elena;Whiting, Andrew [Organic and Biomolecular Chemistry,2014,vol. 12,# 32,p. 6121 - 6127]

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